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I don't believe there is much more to it than that, especially noting that you are aware not to track so fast that you track out amplitude information for modulated signals where the amplitude is used …

To add a simple explanation before reading the good details Tim has provided: It’s quite simple: if the diode only passes the positive half of the signal and blocks the negative we end up with a DC of …

As a front-end radio designer with experience in the microwave frequency ranges, I concur with the advice to just buy a solution such as the ADALM-PLUTO SDR Learning Module. … involved: http://www.arrl.org/news/the-2022-arrl-handbook-for-radio-communications-is-now-available …

The technical decision was to use L-Band which extends from 1-2 GHz. The specific frequencies to use within L-Band depended on political decisions including existing allocations and users of those fre …

As long as the post processing delay is acceptable another potential option is to puncture in time or puncture in frequency depending on the nature of the interference and your ability to detect it. I …

Given the prevalence of "Zero-IF" direct sampling architectures for software radio, it is also now important to include what I would refer to as an "IP2" test, or testing against sensitivity to 2nd order …

Such carrier frequency offsets are typically compensated for digitally by using a numerically controlled oscillator (NCO)- the complex signal at or near baseband is multiplied by the complex NCO outpu …

A Costas Loop is one common implementation for carrier recovery in single-carrier wireless communications. However phase rotation compensation for a complex baseband signal (where the RF signal is dow …

We can determine the total rms phase noise by integrating the single-sided power spectral density $S_{\phi}(f)$ after being modified by the high pass function of the carrier tracking loop (which will …

A key point is bandwidth is proportional to the symbol rate, or rate of change of the modulation. If the symbol is rectangular shaped, the spectrum is a Sinc function with the first null in Hz at the …

I don't see any obvious issue with the OP's reasoning except to clarify that the cross-modulation is is not onto another FM signal but onto another FM channel with caveats on intelligibility. Below I …

In contrast radio frequency signals are often represented as complex numbers once they are brought back to baseband. … When the upper sideband of a radio waveform at a given carrier frequency does not match the lower sideband of the waveform in magnitude and opposite phase, then the waveform when brought to baseband must …

AM Broadcast is large carrier AM, in that the carrier is always present and the amplitude is modulated consistent with the waveform of interest. You can simply hard limit the signal to remove all ampl …

Yes indeed it will be (although we could argue that it may not be necessarily for all distances since the phase is cyclical!). In free space the signal propagates at the speed of light, therefore th …

Constructive interference just increases the gain of the signal at the receiver, which is designed (using automatic gain control) to adjust the signal level over a very wide range to that desired for …